如何单击browser.page\u source中不存在的带有Selenium的按钮

Question

我想单击按钮Alle akzeptieren。不幸的是，当我在print（browser.page\u source）中搜索时，我没有找到它。一个WebDriverWait(browser, 10)没有帮助

我的代码：

browser = webdriver.Firefox(executable_path='./geckodriver')

browser.get("https://www.finanzen.net/")
browser.find_element_by_xpath("//button[@class_='message-component message-button no-children button-responsive-primary']").click()

来自英戈尔斯塔特的问候

Answer 1

所需元素Alle akzeptieren位于<iframe>内，因此您必须：

• 诱导WebDriverWait使所需的帧可用，并切换到它

• 诱导WebDriverWait使所需的元素可单击

• 您可以使用以下任一Locator Strategies：

  • 使用CSS_SELECTOR：

    driver.get("https://www.finanzen.net/")
    WebDriverWait(driver, 20).until(EC.frame_to_be_available_and_switch_to_it((By.CSS_SELECTOR,"iframe[id^='sp_message_iframe'][src^='https://consent.finanzen.net/index.html']")))
    WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "button[title='Alle akzeptieren']"))).click()
    

  • 使用XPATH：

    driver.get("https://www.finanzen.net/")
    WebDriverWait(driver, 20).until(EC.frame_to_be_available_and_switch_to_it((By.XPATH,"//iframe[starts-with(@id, 'sp_message_iframe') and starts-with(@src, 'https://consent.finanzen.net/index.html')]")))
    WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[@title='Alle akzeptieren']"))).click()
    

• 注意：您必须添加以下导入：

   from selenium.webdriver.support.ui import WebDriverWait
   from selenium.webdriver.common.by import By
   from selenium.webdriver.support import expected_conditions as EC
  

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参考文献

您可以在以下内容中找到一些相关讨论：

• Ways to deal with #document under iframe
• Switch to an iframe through Selenium and python
• selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element while trying to click Next button with selenium
• selenium in python : NoSuchElementException: Message: no such element: Unable to locate element

Answer 2

这是因为按钮和“弹出窗口”本身位于iframe内：

在查找并单击按钮之前，您需要switch to it：

# switch to frame
frame = browser.find_element_by_css_selector("iframe[id^=sp_message_iframe]")
browser.switch_to.frame(frame)

# click the button
button = browser.find_element_by_css_selector("button.message-button.button-responsive-primary")
button.click()

# switch back to the default context
browser.switch_to.default_content()

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请注意，您可能需要explicitly wait才能显示框架，以允许页面时间在框架中加载和显示对话框：

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC


browser = webdriver.Firefox(executable_path='./geckodriver')
browser.get("https://www.finanzen.net/")

wait = WebDriverWait(browser, 10)

# switch to frame
frame = wait.until(
    EC.visibility_of_element_located((By.CSS_SELECTOR, "iframe[id^=sp_message_iframe]"))
)
browser.switch_to.frame(frame)

# click the button
button = browser.find_element_by_css_selector("button.message-button.button-responsive-primary")
button.click()

# switch back to the default context
browser.switch_to.default_content()